Multiple glazed window glazing clip



Nov. 15, 1955 w. s. BOBEL MULTIPLE GLAZED WINDOW' LAZING CLIP Filed Dec.4, 1952 I I unin INVENTOR William S. Bob ei BY (040 2 &WCW

ATTORNEY.

United States Patent O MULTIPLE GLAZED WINDOW GLAZING CLIP William S.Bobel, New Kensington, Pa., assignor to Pittsburgl Plate Glass Company,a corporation of Pennsylvania Application December 4, 1952, Serial No.324,089

3 Claims. (Cl. 20-56.4)

This invention relates to multiple pane window constructures, and moreparticularly to improved glazing clips for mountng multiple glazed unitsin Wood or metal window frames or sash. i

Multiple glazed units comprise two or' more panels of' glass spaced onefrom the` other to provide an insulating air film between adjacentpanes. 'The panes are generally spaced from each: other by metal spacerdevices. The panes are generally held against the spacer by means ofcontinuous U-shaped metal channel members engaging the glass, and areheld in window frames by glazing stops or by molded resilient memberswhich seal the margins of the panes to a frame. Multiple glazed windowunits are often mounted in window frames in a plastic glazing or sealingcompound and then shipped or transported from the factory or assemblypoint to a building under Construction. If the unit shifts positioninits frame during transportation, plastic glazing compound isdisplaced, and remounting of the unit in the frame may be required. Thepresent invention rlates to improved resilient "metal glazing clips usedin conjunction with continuous channel members to position 'Anotherobject'of'this `inven`tion is to provide 'a glazing clip for multipleglazed window units which avoids displacement of plastic glazingcompounds by minimizing possible shifting of a window unit positioned insuch glazing compound in a window frame.

A further object of this invention is to provide a glazing clip formultiple glazed window units which will effectively position and securesuch a window unit between a window frame or sash shoulder and aretaining stop.

Other objects and advantages of the invention will become more apparentfrom the following detailed description of preferred embodimentsthereof.

In the drawings,

Figure 1 is a perspective view of a preferred form of glazing clipembodying the principles of my nvention.

Figure 2 is a vertical sectional View, partly cut away, of a multipleglazed window unit mounted in a window frame and provided with theglazing clip shown in Figure 1.

Figure 3 is a perspective view of a modified form of glazing clip.

Figure 4 is a vertical sectional view, partly cut away, of a multipleglazed window unit mounted in a sash and provided with the glazing clipillustrated in Figure 3.

Figure 5 is a diagrammatic elevational view, partly cut away, of amultiple glazed window unit of the type shown in Figure 2 and showingthe unit positioned in a window frame having the stop and glazingcompound omitted in order to show normal positioning of the unitsupports and glazing clips.

2,723,427 Patented Nov. 15, 1955 Referring to the drawings, a multipleglazed window unit is designated by the numeral 10, and includes twopanes of glass 11 and 12 separated by a hollow spacer device 13 and heldtogether as a unit by a metal channel member or members 14 engaging themagnal portion of each pane. The channel member 14 may be formed ofstainless steel of twelve to twenty thousandths of an inch in thickness.A resilient glazing clip 15 is provided to hold the multiple glazed unit10 in proper position in the window frame 16 by spacing the outersurface of pane 11 from the shoulder of the frame 16 and by spacing theouter suface of pane 12 from the glazing stop or strip 17 and by spacingthe edge of the unit 10 from the frame 16. The glazing stop 17 may beSecured to the frame 16 by screws 18. The multiple glazed unit 10 issupported in the frame 16 by having the bottom channel member 14 rest onsetting blocks 19 which in turn rest on the frame 16. For a window ofaverage size, two setting blocks 19 are sufiicient, the blocks beingpositioned inward from the corners of the unit so that the spacingbetween blocks is about one-half the width of the unit. The settingblocks 19 may be made of Wood about one-quarter inch thick andthree-quarters inch long. The illustration in Figure 5 showing thesetting blocks is diagrammatic and not drawn to scale. The space betweenthe sides of the window unit 10 and the shoulder of frame 16 and stop 17is filled with plastic glazing compound 20, such as window putty or thelike.

The glazing clip 15 may be formed of light gauge stainless steel orother suitable metal. As illustrated in Figures 1 and 2, the upper endsor legs 21 of the clip are somewhat inclined one toward the other. Thebase of the clip is curved with two upward humps 22 and a centraldownward` bulge 23. The lower corners 24 and 25 of the clip extend belowthe central downward bulge 23 and may or may not engage the fiat surface26 of the frame 16. The glazing' clip 15 is preferably formed from astainless steel strip about twelve thousandths of an inch thick, andabout five-sxteenths inch wide. The lateral extent of the clip dependson the number of glass panes, spacers, and glass thickness of themultipleglazed unit to be mounted. The clip 15 is somewhat resilient andfiexible so that the upper ends of the legs 21 engage the outersurfacesof the channel 14 to hold the clips in position during mountng aunit in a frame. The humps 22, as shown in Figure 2, may engage thebottom of channel 14. The inward inclination of the legs 21 providesthat the clip lower corners 24 are spaced apart further than the upperends of the legs 21, and hence the clip serves to position the multipleglazed unit 10 midway between the shoulder of frame 16 and the framestop strip 17.

When mountng a glazed unit 10 in a Window or sash frame, the frame 16may be supported in a horizontal position with the shoulder of the framefacing upward. Plastic glazing compound 20 is then spread on the frameshoulder. A glazed unit 10 with glazing clips 15 applied at intervalsaround the channel member 14 as shown in Figure 5 is then lowered intothe frame 16 until the corners 24 of the glazing clips engage the frameshoulder and support the glazed unit 10. Next 'two or more settingblocks 19 are inserted between the lower edge of glazed unit 10 and thebottom member of the window frame 16. More plastic glazing compound 20is then spread around the marginal portions of the glazed unit and theframe stop strips 17 are positioned and secured to the window frame 16.The stop strips 17 are mounted so as to engage the glazing clips and tocompress the clips laterally. This compression of the clip 15 causes thehumps 22 of the clip to bulge upward into resilient contact with thechannel member 14 for further establishing proper spacing andpositioning of the unit with respect to the frame 16. The plastieity ofthe glazing compound 20` is preferably such that il will flow around thelegs 21 of the clip during assembly of the unit in a frame. It will benoted that during the assernbly in horizontal position of the frame andglazed unit, the glazing clips 15 prevent the glazed unit from settlirgfar enough into the frame 16 to dis` place glazing compound from thespace between the unit and the frame shoulder. Likewise duringtransportation or other handling of the assembled rame and glazed unit,the displacement of plastic glazing compound from the space between theunit and frame is minmized. It is to be unclerstood that the describedglazing clips may be used in metal sash as well as in wooden sash orother type window frames. When the assembled window is installed in avertical position, the setting blocks 19, rather than the glazing clips15, support the weight of the glazed unit 10 and prevent settling of theunit and displacement of glazing compound.

The modified form of glazing clips 29 shown in Figures 3 and 4 issimilar to that described above except that the upper ends of theinclined legs 30 are curved outward and downward to form resilient hooks31. The base of clip 29 has two spaced corner portions 34 and 35separated by a raised horizontal bridge 33. The straight bridge 33 issomewhat different from the corresponding portion of the Figure l and 2clip, and engages the edge of the channel member 14 which secures theglass panes 11 and 12 and the hollow pane spacer device 13 together as aunit. The glazing clip 29 is preferably formed from a stainless steelstrip about .016 inch thick, and about one-quarter inch wide. The clip29 is somewhat resilient and flexible enough to cause the hook ends 31to engage the outer surfaces of the channel member 14 to hold the clipsin place during mounting of a unit in a frame. The lateral thickness ofthe hooks 31 is such that the outer portions thereof may engage thesurface of the sash shoulder and the opposing surface of stop strip 17to position the multiple glazed unit midway in the sash frame 16. Theglazing compound 39 fills the space between the outer margins of glasspanes 11 and 12 and the sash shoulder and the stop strip 17. Thecompound 39 also surrounds the legs 30 and hooks 21 of the glazing clip29.

It will be apparent to those skilled in the art that variousmodfications and variations in the nature and arrangement of the glazingclips illustrated are possible without departing from the spirit of thisinvention or the scope of the appended claims.

What I claim is:

l. A glazing clip for positioning a multiple glazed window unitconstruction in a window frame, said clip being of sheet metal andcomprising a continuous bridge portion having a depending corner portionat each end of the bridge portion, said corner portions supporting saidcontnuous bridge portion above a plane through said corner portions, anda leg portion extending upward from each of said corner portions andinclined inwardly one leg portion toward the other leg portion, theupper portion of said leg portions being adapted to engage marginalportions of said multiple glazed window unit.

2. A glazing clip for positioning a multiple glazed window unitconstruction in a window frame, said clip being of resilient sheet metaland comprising a continuous bridge portion having a depending cornerportion at each end of the bridge portion, said corner portionssupporting said continuous bridge portion substantially above a planethrough said corner portions, said continuous bridge portion being ofwavy contour and including two upwardly extending humps joined by adownwardly extending bulge, and a leg portion extending upward from eachof said corner portions and inclined inwardly one leg portion toward theother leg portion, the upper portion of said leg portions being adaptedto engage marginal portions of said multiple glazed window unit.

3. A glazing clip for poistioning a multiple glazed window unitconstruction in a window frame, said clip being of resilient sheet metaland comprising a continuous substantially flat bridge portion having adepending corner portion at each end of the bridge portion, said cornerportions supporting said continuous flat bridge portion above andparallel to a plane through said corner portions, a leg portionextending upward from each of said corner portions and inclined inwardlyone leg portion toward the other leg portion, the upper portion of saidleg portions being adapted to engage marginal portions of said multipleglazed window unit, and a downwardly extending hook-like portion at theupper end of each leg portion.

References Cited in the file of this patent UNITED STATES PATENTS

